Home / 21,153,921.20-31,741,379.40-12,062,999.60

Finding the Fourth Proportional to 21,153,921.20, 31,741,379.40 and 12,062,999.60

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Solution

The fourth proportional to 21,153,921.20, 31,741,379.40 and 12,062,999.60 is: 18,100,485.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153,921.20 : 31,741,379.40 = 12,062,999.60 : x
  2. Step 2: Convert to fraction form
    21,153,921.20/31,741,379.40 = 12,062,999.60/x
  3. Step 3: Cross multiply
    21,153,921.20x = 31,741,379.40 × 12,062,999.60
  4. Step 4: Simplify right side
    21,153,921.20x = 382,896,247,005,648.19
  5. Step 5: Solve for x
    x = 382,896,247,005,648.19/21,153,921.20
  6. Step 6: Final answer
    x = 18,100,485.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.